//node.js使用模块
//导入模块
const convert=require('./upper&lower/upper&lower.js')//.require('模块的路径')  可以不写后缀

//转换字符串大小写
let str = 'aSDFFString';
let result1=convert.node_convert();
let upper = result1.upper(str);
let lower = result1.lower(str);
console.log(upper + '\n' + lower);


//输出正在干嘛
let result2=convert.rest()
let foot = result2.foot();
let game = result2.game();
console.log(foot + '\n' + game);